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https://www.readbyqxmd.com/read/29778697/structural-basis-for-selective-inhibition-of-antibacterial-target-mray-a-membrane-bound-enzyme-involved-in-peptidoglycan-synthesis
#1
REVIEW
Jenny Hering, Elin Dunevall, Margareta Ek, Gisela Brändén
The rapid growth of antibiotic-resistant bacterial infections is of major concern for human health. Therefore, it is of great importance to characterize novel targets for the development of antibacterial drugs. One promising protein target is MraY (UDP-N-acetylmuramyl-pentapeptide: undecaprenyl phosphate N-acetylmuramyl-pentapeptide-1-phosphate transferase or MurNAc-1-P-transferase), which is essential for bacterial cell wall synthesis. Here, we summarize recent breakthroughs in structural studies of bacterial MraYs and the closely related human GPT (UDP-N-acetylglucosamine: dolichyl phosphate N-acetylglucosamine-1-phosphate transferase or GlcNAc-1-P-transferase)...
May 17, 2018: Drug Discovery Today
https://www.readbyqxmd.com/read/29777355/reduced-port-totally-robotic-distal-subtotal-gastrectomy-with-lymph-node-dissection-for-gastric-cancer-a-modified-technique-using-single-site-%C3%A2-and-two-additional-ports
#2
Won Jun Seo, Taeil Son, Chul Kyu Roh, Minah Cho, Hyoung-Il Kim, Woo Jin Hyung
BACKGROUND: Reduced-port laparoscopic gastrectomy further minimizes the invasiveness of laparoscopic gastrectomy, thereby improving patient quality of life. However, suboptimal ergonomics and visualization are challenges to performing reduced-port laparoscopy. As the application of a robotic surgical system may help overcome these challenges, the present study was performed to evaluate the short-term outcomes of reduced-port totally robotic distal subtotal gastrectomy. METHOD: An initial 40 consecutive gastric cancer patients treated with reduced-port totally robotic distal subtotal gastrectomy with lymph node dissection from February 2016 to February 2017 were retrospectively reviewed...
May 18, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29775777/antidepressant-potential-of-novel-flavonoids-derivatives-from-sweet-violet-viola-odorata-l-pharmacological-biochemical-and-computational-evidences-for-possible-involvement-of-serotonergic-mechanism
#3
Nasiara Karim, Imran Khan, Abeer Abdelhalim, Ajmal Khan, Sobia Ahsan Halim
Plant-derived natural constituents are of great interest in modern drug discovery due to their natural diversity. Viola odorata L has been traditionally used for the treatment of neuropsychiatric disorders. The present study was undertaken to isolate phytoconstituents including three flavonoids 5,7-Dihydroxy-3,6-dimethoxyflavone[1] 5,7,4'-trihydroxy-3',5'dimethoxyflavone [2] and 5,7,4'-trihydroxy-3'-methoxyflavone [3] from the whole plant of Viola odorata L and to investigate the antidepressant-like effects of these compounds and their possible mechanism of action using antagonists of the serotonergic, dopaminergic and adrenergic system...
May 15, 2018: Fitoterapia
https://www.readbyqxmd.com/read/29775630/the-basolateral-amygdala-dopaminergic-system-contributes-to-the-improving-effect-of-nicotine-on-stress-induced-memory-impairment-in-rats
#4
Elnaz Keshavarzian, Zahra Ghasemzadeh, Ameneh Rezayof
Stress seems to be an important risk factor in the beginning and continuing stages of cigarette tobacco smoking in humans. Considering that both of nicotine administration and stress exposure affect cognitive functions including memory formation, the aim of the present study was 1) to evaluate the effect of subcutaneous (s.c.) administration of nicotine on memory formation under stress and 2) to assess the possible role of the basolateral amygdala (BLA) dopamine D1 and D2 receptors in the effect of nicotine on stress-induced memory retrieval impairment...
May 15, 2018: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29775200/cadmium-induced-changes-in-the-production-of-siderophores-by-a-plant-growth-promoting-strain-of-pseudomonas-fulva
#5
Dominika Thiem, Michał Złoch, Renata Gadzała-Kopciuch, Sonia Szymańska, Christel Baum, Katarzyna Hrynkiewicz
The impact of increasing Cd2+ exposure on the quality and quantity of siderophores produced by a plant growth promoting Pseudomonas fulva strain was tested to gain insight into the degree of change. P. fulva was cultured in the increasing concentrations of Cd2+ (0, 0.5, 1.0, 2.0 mM). The secreted siderophores were separated by HPLC and characterized by UHPLC-QTOF/MS. In the presence of 2 mM Cd2+ synthesis of siderophores (hydroxamates, catecholates, phenolates) was mitigated compared to the treatments with lower concentrations of Cd2+ (0...
May 18, 2018: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/29775043/designing-a-dy-2-single-molecule-magnet-with-two-well-differentiated-relaxation-processes-by-using-a-nonsymmetric-bis-bidentate-bipyrimidine-n-oxide-ligand-a-comparison-with-mononuclear-counterparts
#6
Ismael F Díaz-Ortega, Juan Manuel Herrera, Daniel Aravena, Eliseo Ruiz, Tulika Gupta, Gopalan Rajaraman, H Nojiri, Enrique Colacio
Herein we report a dinuclear [(μ-mbpymNO){(tmh)3 Dy}2 ] (1) single-molecule magnet (SMM) showing two nonequivalent DyIII centers, which was rationally prepared from the reaction of Dy(tmh)3 moieties (tmh = 2,2,6,6-tetramethyl-3,5-heptanedionate) and the asymmetric bis-bidentate bridging ligand 4-methylbipyrimidine (mbpymNO). Depending on whether the DyIII ions coordinate to the N^O or N^N bidentate donor sets, the DyIII sites present a NO7 ( D2 d geometry) or N2 O6 ( D4 d ) coordination sphere. As a consequence, two different thermally activated magnetic relaxation processes are observed with anisotropy barriers of 47...
May 18, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29774939/-feasibility-and-preliminary-technical-experience-of-single-incision-plus-one-port-laparoscopic-total-gastrectomy-combined-with-%C3%AF-shaped-esophagojejunal-anastomosis-in-surgical-treatment-of-gastric-cancer
#7
Guangsheng Du, Enlai Jiang, Yuan Qiu, Wensheng Wang, Shuai Wang, Yunbo Li, Ke Peng, Xiang Li, Hua Yang, Weidong Xiao
OBJECTIVE: To explore the feasibility, safety, and preliminary technical experience of single incision plus one port laparoscopic total gastrectomy combined with π-shaped esophagojejunal anastomosis (SILT-π) in the surgical treatment of gastric cancer. METHODS: Clinical data of 5 gastric cancer patients undergoing SILT-π operation at the Department of General Surgery, The Second Affiliated Hospital of the Army Medical University from August to October 2017 were retrospectively analyzed...
May 25, 2018: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29774930/-advertent-problems-about-gastric-stump-cancer-surgery
#8
Han Liang
Due to different disease background of gastric stump cancer(GSC) patients (benign or malignant lesion, reconstruction of digestive tract, etc.), the GSC surgical procedure and the difficulty of lymphadenectomy are also different. The extent of radical lymphadenectomy for gastric stump cancer should extend beyond D2 lymphadenectomy, according to the different backgrounds of initial disease, reconstructions, and tumor location. A lymphadenectomy should include the lymph nodes in anterior (No.17) and posterior (No...
May 25, 2018: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29774517/the-acute-effects-of-age-and-particulate-matter-exposure-on-heart-rate-and-heart-rate-variability-in-mice
#9
Blake A Bennett, Ernst W Spannhake, Ana M Rule, Patrick N Breysse, Clarke G Tankersley
Exposure to ambient particulate matter (PM) is associated with increased cardiac morbidity and mortality with the elderly considered to be the most susceptible. The purpose of this study was to determine if exposure to PM would cause a greater impact on heart regulation in older DBA/2 (D2) male mice as determined by changes in heart rate (HR) and heart rate variability (HRV). D2 mice at the ages of 4, 12, and 19 months were instilled with 100 µg of PM or saline by aspiration. Before and after the aspiration, 3-min echocardiogram (ECG) samples for HR and HRV were recorded at 15-min intervals for 3 h along with corresponding measurements of homeostasis, such as temperature, metabolism, and ventilation...
May 17, 2018: Cardiovascular Toxicology
https://www.readbyqxmd.com/read/29772497/the-role-of-the-vasopressin-system-and-dopamine-d1-receptors-in-the-effects-of-social-housing-condition-on-morphine-reward
#10
M L Shawn Bates, Rebeca S Hofford, Michael A Emery, Paul J Wellman, Shoshana Eitan
BACKGROUND: The association with opioid-abusing individuals or even the perception of opioid abuse by peers are risk factors for the initiation and escalation of abuse. Similarly, we demonstrated that morphine-treated animals housed with only morphine-treated animals (referred to as morphine only) acquire morphine conditioned place-preference (CPP) more readily than morphine-treated animals housed with drug-naïve animals (referred to as morphine cage-mates). However, the molecular mechanisms underlying these effects are still elusive...
April 22, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29770746/-express-chronic-inflammatory-pain-decreases-the-glutamate-vesicles-in-presynaptic-terminals-of-the-nucleus-accumbens
#11
Chuchu Qi, Baolin Guo, Keke Ren, Han Yao, Mengmeng Wang, Tangna Sun, Guohong Cai, Haiying Liu, Rui Li, Ceng Luo, Wenting Wang, Sheng-Xi Wu
Reward system has been proved to be important to nociceptive behavior, and the nucleus accumbens (NAc) is a key node in reward circuitry. It has been further revealed that dopamine system modulates the NAc to influence the pain sensation, whereas the role of glutamatergic projection in the NAc in the modulation of chronic pain is still elusive. In this study, we used a Complete Freund adjuvant (CFA) -induced chronic inflammatory pain model to explore the changes of the glutamatergic terminals in the NAc, and we found that following the chronic inflammation, the protein level of vesicular glutamate transporters1 (VGLUT1) was significant decreased in the NAc...
January 1, 2018: Molecular Pain
https://www.readbyqxmd.com/read/29770488/an-efficient-and-facile-synthesis-of-deuterium-labeled-anticancer-agent-bendamustine-hydrochloride
#12
Baomin Liu, Hui Qin, Yinsheng Zhang
Bendamustine hydrochloride is an alkylating agent which was developed for the treatment of various human cancers. The stable isotope-labeled bendamustine was required to support clinic studies. An effective and operationally simple method for the synthesis of [D6 ] bendamustine hydrochloride was developed using DCl as a catalyst and D2 O as a deuterium source. Under the present condition, regioselectively deuterated bendamustine hydrochloride with high deuterium incorporation is achieved.
May 17, 2018: Journal of Labelled Compounds & Radiopharmaceuticals
https://www.readbyqxmd.com/read/29770408/la-la-bonded-dimetallofullerenes-la-2-c-2n-species-for-stabilizing-c-2n-2n-92-96-besides-la-2-c-2-c-2n
#13
Qiao-Zhi Li, Jia-Jia Zheng, Ling He, Shigeru Nagase, Xiang Zhao
Recent reports pointed out that the formal La2C2n (2n = 92-106) series can exist stably as carbide cluster metallofullerenes (CCMFs) La2C2@C2n-2 with their successful crystallographic characterization. Herein, we suggest that the corresponding dimetallofullerenes (di-EMFs) La2@C2n possessing the lowest potential energies are also plausible candidates because of their favorability in statistical thermodynamics. This can be demonstrated in our present theoretical investigations on La2C94 and previously reported other La2C2n (2n = 92, 96-100) series by density functional theory calculations and statistical mechanics analyses...
May 17, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29769621/vitamin-d-levels-correlate-with-lymphocyte-subsets-in-elderly-patients-with-age-related-diseases
#14
Xudong Mao, Bin Hu, Zhiwen Zhou, Xubin Xing, Yan Wu, Jing Gao, Yue He, Ying Hu, Qihong Cheng, Qing Gong
Hypovitaminosis D is associated with age-related illnesses, including hypertension, cardiovascular disease (CRVD), cerebrovascular disease (CAD) and type 2 diabetes mellitus (T2DM). In our retrospective observational study, blood samples of elderly healthy controls (n = 461) and patients with age-related diseases (n = 8,621) were subjected to flow-cytometry in order to determine correlations between age-related diseases and cluster of differentiation 4 (CD4), CD8, CD3, and CD19 lymphocyte markers, as well as serum levels of 25-hydroxyvitamin D2 (25(OH)D2 ) and 25-hydroxyvitamin D3 (25(OH)D3 )...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29769195/osteocyte-driven-downregulation-of-snail-restrains-effects-of-drd2-inhibitors-on-mammary-tumor-cells
#15
Shengzhi Liu, Yao Fan, Andy Chen, Aydin Jalali, Kazumasa Minami, Kazuhiko Ogawa, Harikrishna Nakshatri, Bai-Yan Li, Hiroki Yokota
While bone is a frequent target of breast cancer-associated metastasis, little is known about the effects of tumor-bone interactions on the efficacy of tumor-suppressing agents. Here we examined the effect of two FDA-approved dopamine modulators, Fluphenazine (FP) and Trifluoperazine (TFP), on mammary tumor cells, osteoclasts, osteoblasts, and osteocytes. These agents suppressed proliferation and migration of mammary tumor cells chiefly by antagonizing dopamine receptor D2 and reduced bone resorption by downregulating nuclear factor of activated T-cells, cytoplasmic 1 (Nfatc1)...
May 16, 2018: Cancer Research
https://www.readbyqxmd.com/read/29768534/impact-of-dexmedetomidine-on-hemodynamics-in-rabbits
#16
Jianjun Ren, Changfa Li, Shuxian Ma, Jiangli Wu, Yanjie Yang
PURPOSE: To evaluate the effects of single intravenous administration of Dexmedetomidine (DEX) on hemodynamics in rabbits. METHODS: A total of 32 New Zealand white rabbits were randomly divided into the control group (Group C), Group D1 (2.75 μg/kg), Group D2 (5.5 μg/kg), and Group D3 (8.25 μg/kg) to compare systolic blood pressure (SBP), diastolic blood pressure (DBP), heart rate (HR), central venous pressure (CVP), left ventricular systolic pressure (LVSP), left ventricular end-stage diastolic pressure (LVEDP), left ventricular developmental pressure (LVDP), +dp/dtmax, -dp/dtmax, and t-dp/dtmax at different time points...
April 2018: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/29767552/ravl1-activates-brassinosteroids-and-ethylene-signaling-to-modulate-response-to-sheath-blight-disease-in-rice
#17
De Peng Yuan, Chong Zhang, Zi Yuan Wang, Li Tian Ya, Xiao Feng Zhu, Yuan Hu Xuan
Rhizoctonia solani causes sheath blight disease in rice; however, the defense mechanism of rice plants against R. solani remains elusive. To analyze the roles of brassinosteroid (BR) and ethylene signaling on rice defense to R. solani, wild-type (WT) rice and several mutants and over-expressing (OX) lines were inoculated with R. solani. Mutants d61-1 and d2 were less susceptible to sheath blight disease, bri1-D was more susceptible, and ravl1 and d61-1/EIL1 Ri5 were similarly susceptible compared to WT. The double mutant ravl1/d61-1 was phenotypically similar to the ravl1 mutant...
May 16, 2018: Phytopathology
https://www.readbyqxmd.com/read/29767374/the-effect-of-ca1-dopaminergic-system-on-amnesia-induced-by-harmane-in-mice
#18
Mohammad Nasehi, Simin Hasanvand, Fatemeh Khakpai, Mohammad-Reza Zarrindast
In the present study, the effects of bilateral injections of dopaminergic drugs into the hippocampal CA1 regions (intra-CA1) on harmane-induced amnesia were examined in mice. We used a single-trial step-down inhibitory avoidance task for the assessment of memory acquisition in adult male mice. Our data indicated that pre-training intra-peritoneal (i.p.) administration of harmane (12 mg/kg) impaired memory acquisition. Moreover, intra-CA1 administration of dopamine D1 receptor agonist, SKF38393 (0.25 µg/mouse), dopamine D1 receptor antagonist, SCH23390 (0...
May 16, 2018: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/29767152/rumen-liquor-from-slaughtered-cattle-as-inoculum-for-feed-evaluation
#19
Pius Lutakome, Fred Kabi, Francis Tibayungwa, Germana H Laswai, Abiliza Kimambo, Cyprian Ebong
Use of nonlinear mathematical models has been majorly based on in vitro gas production (GP) data generated when substrates are incubated with rumen liquor from fistulated steers. However, existing evidence suggests that rumen liquor from slaughtered cattle of unknown dietary history also generates quantifiable in vitro GP data. Fitting and description of GP data obtained from 4 diets incubated with rumen liquor from slaughtered cattle was evaluated using single-pool exponential model with discrete lag time (EXPL), logistic (LOG), Groot's (GRTS) and Gompertz (GOMP) models...
September 2017: Animal nutrition
https://www.readbyqxmd.com/read/29766608/effects-of-supplementary-desalted-mother-liquor-as-replacement-of-commercial-salt-in-diet-for-thai-native-cattle-on-digestibility-energy-and-nitrogen-balance-and-rumen-conditions
#20
Yoshiaki Sato, Wanna Angthong, Patima Butcha, Motoharu Takeda, Kazato Oishi, Hiroyuki Hirooka, Hajime Kumagai
Four Thai native cattle were used in a 4 × 4 Latin square design experiment to evaluate the availability of desalted mother liquor (DML) as replacement of salt in concentrate. Each cattle was assigned to one of the following concentrate feeding treatments: C1, 1% NaCl was added as salt; C2, 2% NaCl was added as salt; D1, 1% NaCl was replaced by DML; D2, 2% NaCl was replaced by DML, on a dry matter (DM) basis. The animals were fed rice straw and experimental concentrates (40:60) at 1.9% of body weight on a DM basis, daily...
May 16, 2018: Animal Science Journal, Nihon Chikusan Gakkaihō
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